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++How to Select

+++ High Performance

Ester Prepolymer






















Northstar Polymers, LLC

3444 Dight Avenue So.

Minneapolis, MN 55406

Tel: 612.721.2911

Fax: 612.721.1009





Northstar Polymers, LLC is a member of Polyurethane Manufacturers Association.


Copy right reserved by Northstar Polymers, LLC 2000 - 2007.  Northstar Polymer prohibits duplication of the contents of this web site for the purposes of public display and/or using on another web site without a written authorization by Northstar Polymers, LLC.




 Data Sheet


This polyester prepolymer is designed by Northstar Polymers for use with a variety of curing agents.  The resulting series of systems yield cured elastomers that cover a range of hardness values while sharing the features of this prepolymer.  MSA-052 is commonly used in applications that demand abrasion resistance with strength and tear resistance.



Typical Physical Properties


Specific Gravity:




Viscosity 180F (cps):

1800 - 2200



% NCO:




Amine Equivalents:




Appearance at 77 F:

White Waxy Solid






Health and Safety Information


We prepare Material Safety Data Sheets and Product Labels that provide health and safety information intended to aid in the safe use of this prepolymer.  Before using or handling this product each person must read and become familiar with the available information on its hazards and proper use and handling procedures.  For more information, contact your Northstar Polymers representative or call our corporate headquarters in Minneapolis  MN.




This material is an industrial-grade chemical.  Please keep it in a secure place and prevent access from any unauthorized individual.  The personnel who handles this material needs to read the Material Safety Data Sheet  (MSDS) for detail information on safety and handling of the material.  The MSDS for each component is sent with the shipment of the material. 


When using this material, be sure to operate in a wide-open area with good air movement, or in a well-ventilated area. Wear rubber gloves, long sleeves, and protective eyeglasses to prevent skin/eye contact of the material.  When your operation involves heating or spraying of the material, we recommend, in addition to the above, installation of a proper ventilation system and/or using an appropriate type of respirator to prevent inhalation of the fume.  


Direct contact of polyurethane raw materials to skin/eye, as well as ingestion may lead to health problems.  No eating or smoking should be permitted at the working area.  The operator should wash hands well with soap and water after handling the materials and follow the other procedures of the Standard Industrial Hygiene Practices.  Please refer to the MSDS for each component for the detailed health information.


For any questions, please contact Northstar Polymers.






Northstar Polymers, LLC

3444 Dight Avenue South

Minneapolis, MN 55406

Tel: 612.721.2911

Fax: 612.721.1009

E-Mail: info@northstarpolymers.com


Notice: All of the statements, recommendations, suggestions, and data concerning the subject material are based on our laboratory results, and although we believe the same to be reliable, we expressly do not represent, warrant, or guarantee the accuracy, completeness, or reliability of same, or the material or the results to be obtained from the use thereof, neither do we warrant that any such use, either alone or in combination with other materials, shall be free of the rightful claim of any third party by way of INFRINGEMENT or the like, and NORTHSTAR POLYMERS DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, OF MERCHANTABILITY and FITNESS FOR A PARTICULAR PURPOSE.